The Authoritative x402 Conformance & Security Linter
Verify DNS existence records, O(1) minimal discovery manifests, OpenAPI route templates, and adversarial attack resilience across all x402-enabled endpoints.
api.ashlar.blue
Full Tier 1–4 Conformance Verified · 0 Violations Detected
Tier 1: DNS Existence PASS
Checks _x402 TXT grammar & DNSSEC chain.
- ✔
_x402TXT record published - ✔ RFC 1035 character string format valid
- ✔ Strict HTTPS origin declaration verified
Tier 2: Discovery Manifest PASS
Checks /.well-known/x402 5-field baseline & O(1) size.
- ✔ Minimal 5-field profile conformant
- ✔ O(1) bound respected (< 512 bytes)
- ✔ Facilitator endpoint reachable
Tier 3: OpenAPI Introspection PASS
Checks OpenAPI URI templates & dynamic 402 negotiation.
- ✔
openapi.jsonreferenced in manifest - ✔ RFC 6570 parameterized route matching
- ✔ Dynamic HTTP 402 challenge negotiation
Tier 4: Adversarial Security PASS
15-vector invariant attack battery evaluation.
- ✔ Path traversal (
../) & null-byte rejection - ✔ Ephemeral
sessionNoncereplay protected - ✔ Integer atomic price precision (no float manipulation)
Accepted Multi-Rail Currencies & Tokens
The Ashlar Blue turnstile natively settles agentic commerce across 6 institutional blockchains with instant cryptographic finality. Every supported asset is verified by hardware attestation and offline SCITT receipts.
Primary retail & micro-toll gasless lane via EIP-3009 transfer authorizations.
High-throughput institutional payments with 3-second ledger settlement.
FTSO v2 verified oracle pricing with trustless non-custodial FAssets bridging.
Sub-cent micro-clearing (100 stroops base fee) with 3-5s SCP deterministic finality & Soroban smart contracts.
Omnichain Fungible Token (OFT) clearing and decentralized cross-chain verification.
Cross-chain General Message Passing (GMP) & unified interchain liquidity routing.
Institutional multi-DLT interoperability gateway and enterprise banking settlement rail.
Asynchronous Byzantine Fault Tolerant (aBFT) micro-toll consensus and fair-ordered clearing.
Institutional ISO 20022 messaging & enterprise trade finance clearing.
Decentralized verifiable memory & SCITT tamper-proof evidence persistence.
2.8-second deterministic instant finality with Falcon-1024 quantum readiness.
Native UTXO settlement paired with Flare FAssets non-custodial smart bridging.
Sub-second parallel runtime transaction clearing for high-frequency AI agent swarms.
Blockchain foundations and enterprise protocols seeking dedicated TEE hardware enclave turnstiles, telemetry indexers, and automated agent clearing: onboarding operates under institutional SLA agreements ($75k–$150k setup + $35k–$50k/yr attestation SLA).